get the duration of a youtube video

gistfile1.rb

require 'rubygems'
require 'hpricot'
require 'net/http'

HOST = "gdata.youtube.com"
SITE = "/feeds/api"

def parse_duration(xml) 
  result = 0
  (xml/'entry').each do |entry|
    result = (entry/'yt:duration').first.attributes["seconds"].to_i
  end
  result
end

def duration(youtubeid)
   request = Net::HTTP::Get.new("#{SITE}/videos?q=#{youtubeid}&safeSearch=none")  
   request.add_field 'GData-Version', '2'
   Net::HTTP.start("#{HOST}", 80) do |http|
     response = http.request(request)
     xml = Hpricot(response.body)
     result = parse_duration(xml)
   end
end


puts duration('001Vzudt-xo')
puts duration('0_0_1xD_T2k')
puts duration('001XYCqJU-Q')
puts duration('00lFrOufbYY')